Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.614419] ================================================================== [ 15.614489] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.614597] Read of size 18446744073709551614 at addr fff00000c6532b04 by task kunit_try_catch/181 [ 15.614741] [ 15.614849] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.614931] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.614957] Hardware name: linux,dummy-virt (DT) [ 15.615089] Call trace: [ 15.615110] show_stack+0x20/0x38 (C) [ 15.615278] dump_stack_lvl+0x8c/0xd0 [ 15.615370] print_report+0x118/0x5d0 [ 15.615465] kasan_report+0xdc/0x128 [ 15.615548] kasan_check_range+0x100/0x1a8 [ 15.615604] __asan_memmove+0x3c/0x98 [ 15.615650] kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.615704] kunit_try_run_case+0x170/0x3f0 [ 15.615751] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.615902] kthread+0x328/0x630 [ 15.616318] ret_from_fork+0x10/0x20 [ 15.616513] [ 15.616619] Allocated by task 181: [ 15.616716] kasan_save_stack+0x3c/0x68 [ 15.616758] kasan_save_track+0x20/0x40 [ 15.616814] kasan_save_alloc_info+0x40/0x58 [ 15.616918] __kasan_kmalloc+0xd4/0xd8 [ 15.616994] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.617086] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 15.617233] kunit_try_run_case+0x170/0x3f0 [ 15.617272] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.617341] kthread+0x328/0x630 [ 15.617375] ret_from_fork+0x10/0x20 [ 15.617410] [ 15.617429] The buggy address belongs to the object at fff00000c6532b00 [ 15.617429] which belongs to the cache kmalloc-64 of size 64 [ 15.617503] The buggy address is located 4 bytes inside of [ 15.617503] 64-byte region [fff00000c6532b00, fff00000c6532b40) [ 15.617804] [ 15.617852] The buggy address belongs to the physical page: [ 15.617934] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106532 [ 15.618032] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.618158] page_type: f5(slab) [ 15.618234] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 15.618327] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 15.618445] page dumped because: kasan: bad access detected [ 15.618563] [ 15.618636] Memory state around the buggy address: [ 15.618697] fff00000c6532a00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.618758] fff00000c6532a80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 15.619026] >fff00000c6532b00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 15.619153] ^ [ 15.619203] fff00000c6532b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.619274] fff00000c6532c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.619409] ==================================================================
[ 12.712206] ================================================================== [ 12.712624] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.712925] Read of size 18446744073709551614 at addr ffff8881032ecb04 by task kunit_try_catch/197 [ 12.713440] [ 12.713564] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.713845] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.713866] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.714062] Call Trace: [ 12.714076] <TASK> [ 12.714091] dump_stack_lvl+0x73/0xb0 [ 12.714123] print_report+0xd1/0x610 [ 12.714145] ? __virt_addr_valid+0x1db/0x2d0 [ 12.714167] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.714192] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.714215] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.714264] kasan_report+0x141/0x180 [ 12.714286] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.714316] kasan_check_range+0x10c/0x1c0 [ 12.714413] __asan_memmove+0x27/0x70 [ 12.714434] kmalloc_memmove_negative_size+0x171/0x330 [ 12.714460] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.714487] ? __schedule+0x10cc/0x2b60 [ 12.714508] ? __pfx_read_tsc+0x10/0x10 [ 12.714530] ? ktime_get_ts64+0x86/0x230 [ 12.714554] kunit_try_run_case+0x1a5/0x480 [ 12.714578] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.714601] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.714625] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.714648] ? __kthread_parkme+0x82/0x180 [ 12.714668] ? preempt_count_sub+0x50/0x80 [ 12.714692] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.714716] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.714740] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.714778] kthread+0x337/0x6f0 [ 12.714797] ? trace_preempt_on+0x20/0xc0 [ 12.714820] ? __pfx_kthread+0x10/0x10 [ 12.714840] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.714861] ? calculate_sigpending+0x7b/0xa0 [ 12.714885] ? __pfx_kthread+0x10/0x10 [ 12.714906] ret_from_fork+0x116/0x1d0 [ 12.714924] ? __pfx_kthread+0x10/0x10 [ 12.714944] ret_from_fork_asm+0x1a/0x30 [ 12.714974] </TASK> [ 12.714983] [ 12.722787] Allocated by task 197: [ 12.722971] kasan_save_stack+0x45/0x70 [ 12.723229] kasan_save_track+0x18/0x40 [ 12.723537] kasan_save_alloc_info+0x3b/0x50 [ 12.723691] __kasan_kmalloc+0xb7/0xc0 [ 12.723871] __kmalloc_cache_noprof+0x189/0x420 [ 12.724095] kmalloc_memmove_negative_size+0xac/0x330 [ 12.724331] kunit_try_run_case+0x1a5/0x480 [ 12.724661] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.724880] kthread+0x337/0x6f0 [ 12.725051] ret_from_fork+0x116/0x1d0 [ 12.725242] ret_from_fork_asm+0x1a/0x30 [ 12.725564] [ 12.725638] The buggy address belongs to the object at ffff8881032ecb00 [ 12.725638] which belongs to the cache kmalloc-64 of size 64 [ 12.726208] The buggy address is located 4 bytes inside of [ 12.726208] 64-byte region [ffff8881032ecb00, ffff8881032ecb40) [ 12.726816] [ 12.726919] The buggy address belongs to the physical page: [ 12.727144] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1032ec [ 12.727411] flags: 0x200000000000000(node=0|zone=2) [ 12.727574] page_type: f5(slab) [ 12.727694] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.728023] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.728361] page dumped because: kasan: bad access detected [ 12.728610] [ 12.728697] Memory state around the buggy address: [ 12.728930] ffff8881032eca00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.729145] ffff8881032eca80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.729358] >ffff8881032ecb00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.729922] ^ [ 12.730088] ffff8881032ecb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.730422] ffff8881032ecc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.730999] ==================================================================